:root {
  --trsn: all 0.5s ease 0s;
  --black: #000;
}

body {
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.container {
  width: 100%;
  display: flex;
  flex-flow: row nowrap;
  justify-content: center;
  align-items: center;
}
.paint-area {
  flex: 0 1 60%;
  height: 600px;
  border-right: 1px solid #eee;
}
.canvas-box {
  border: 1px solid #eee;
  margin: 0 auto;
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
}
.canvas-area {
  position: relative;
  width: 100%;
  height: 100%;
}
.canvas-area canvas {
  position: absolute;
  z-index: 1;
}
.canvas-image {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  pointer-events: none;
}
textarea{
  display: block;
}
.margin {
  margin: 10px 0;
}